Homeautomation. Mainly parts of the Homematic system.
Why Homematic if I work for a company with professional, highlevel PC-based automation? Because of the wireless communication system making automation possible even in existing buildings.

Microcontroller / electronic stuff.
Mainly in combination with
homeautomation but also for
giving courses
at the MINT-Technikum here in Verl.

Running. Well more or less fun.
But I use to run 2 times a week a couple of kilometers.